Offer accepted

"Shit!" Andy said as his cock twitched, squirting more green goo as he moaned and bucked his hips, filling his body with even more intense pleasure.

"Uh oh, looks like your penis is starting to change again. Can't wait to see what happens," Thalia said with a grin as she sat on the edge of the bed watching his cock grow larger. "I love how it transforms, changing every nerve ending to bring so much pleasure that the human body can't even handle it."

"Oh God......."

"Stretching the skin, the muscle, making it unrecognizable while emptying your mind until you are nothing but a drooling ball of flesh that cums, over and over again."

"I accept..... fuck! I accept your offer; just please help me," Andy begged, not caring anymore about what would happen.

"As you wish," Thalia said before she pointed her finger, zapping his penis with a quick jolt of yellow light.

"Oh.... oh..... FUCK!" Andy cried out before he bucked his hips and began to cum again as his cock unloaded gallon after gallon of green sludge into the air.

The slime did not fall and began to float in the air like there was no gravity. Swirling around as Thalia smiled and stared up at the floating goo before she stood up and traced her finger along the green-tainted cum.

"There we go, let's get it all out of there," she said before the green fluid spewing from his cock began to turn white. "And there it is."

"Shit..... holy shit!" Andy said, struggling to catch his breath as his cock began to shrink back down to its normal size and shape before flopping over against his stomach. "Thank you, so much."

"Don't thank me yet," Thalia said with a grin as she snapped her finger, making his penis stiff once more. "Did you forget our deal?"

"Wait, what, now?" Andy asked as he sat up with a panicked look on his face.

"Oh yes, whenever I want, and however many times as I want. Your penis belongs to me now, remember?"

As the air was filled with green slime floating around, Andy suddenly realized the depth of the situation he was in. Though his penis may have been saved from one horror, he may have traded it for a worse one.

"Now, I want to see what your little sex organ can do," Thalia said with a chuckle.